title: 640 Gbaud (1.28 Tbit/s/ch) optical Nyquist pulse transmission over 525 km with substantial PMD tolerance.
abstract: We report a substantial increase in PMD tolerance in a single-channel ultrahigh-speed transmission using optical Nyquist pulses. We demonstrate both analytically and experimentally a large reduction in depolarization-induced crosstalk with optical Nyquist pulses, which is one of the major obstacles facing polarization-multiplexed ultrashort pulse transmission. By taking advantage of the high PMD tolerance, a low-penalty 1.28 Tbit/s/ch optical Nyquist TDM transmission at 640 Gbaud was achieved over 525 km.
authors.forename: Koudai
authors.initials: K
authors.lastname: Harako
authors.forename: Daiki
authors.initials: D
authors.lastname: Seya
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Hirooka
authors.forename: Masataka
authors.initials: M
authors.lastname: Nakazawa